<template>
	<view class="superwei-combox" :class="border ? '' : 'superwei-combox__no-border'">
		<view v-if="label" class="superwei-combox__label" :style="labelStyle">
			<text>{{ label }}</text>
		</view>
		<view class="superwei-combox__input-box">
			<input class="superwei-combox__input" type="text" :placeholder="placeholder"
				placeholder-class="superwei-combox__input-plac" disabled v-model="inputVal" @input="onInput"
				@click="toggleSelector" @focus="onFocus" @blur="onBlur" />
			<uni-icons :type="showSelector ? 'top' : 'bottom'" size="14" color="#999" @click="toggleSelector">
			</uni-icons>
		</view>
		<view class="mask" v-if="showSelector" @click="close()"></view>
		<view class="superwei-combox__selector" :class="showType.length > 0 ? 'addWidth' : ''" v-if="showSelector">
			<view class="uni-popper__arrow"></view>
			<scroll-view scroll-y="true" class="superwei-combox__selector-scroll">
				<view class="superwei-combox__selector-empty" v-if="filterCandidatesLength === 0">
					<text>{{ $t('superweiCombox.emptyTips') }}</text>
				</view>
				<view class="tableTitle" v-if="filterCandidatesLength != 0 && showTitleType.length > 0">
					<text>{{ showTitleType }}</text>
					<text>{{ showType }}</text>
				</view>
				<view v-if="keyName1.length == 0">
					<view class="superwei-combox__selector-item" v-for="(item, index) in filterCandidates" :key="index"
						@click="onSelectorClick(index)">
						<text
							:style="(isJSON ? item[keyName] ? item[keyName] == inputVal : false : item == inputVal) ? 'font-weight: bold;background-color: ' + selectedBackground + ';color: ' + selectedColor : ''">{{ isJSON ? item[keyName] ? item[keyName] : '字段' + keyName + '不存在' : item }}</text>
					</view>
				</view>
				<view v-else>
					<view class="superwei-combox__selector-item" v-for="(item, index) in activeFilterCandidates"
						:key="index" @click="onSelectorClick(index)">
						<text
							:style="(isJSON ? item[keyName] ? item[keyName] == inputVal : false : item == inputVal) ? 'font-weight: bold;background-color: ' + selectedBackground + ';color: ' + selectedColor : ''">{{ isJSON ? item[keyName] ? item[keyName] : '字段' + keyName + '不存在' : item }}</text>
						<text
							:style="(isJSON ? item[keyName] ? item[keyName] == inputVal : false : item == inputVal) ? 'font-weight: bold;background-color: ' + selectedBackground + ';color: ' + selectedColor : ''">{{ item[keyName1] }}</text>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
import { toRaw } from 'vue';

/**
 * Combox 组合输入框
 * @description 组合输入框一般用于既可以输入也可以选择的场景
 * @property {String} label 左侧文字
 * @property {String} labelWidth 左侧内容宽度
 * @property {String} placeholder 输入框占位符
 * @property {Array} candidates 候选项列表
 * @property {String} emptyTips 筛选结果为空时显示的文字
 * @property {String} value 组合框的值
 * @property {String} selectedBackground 选中项背景颜色
 * @property {String} selectedColor 选中项文字颜色
 * @property {Boolean} isJSON 是否是json数组
 * @property {String} keyName json数组显示的字段值
 * @property {String} showTitleType 左标题
 * @property {String} showType 右标题
 * @property {String} keyName1 第二展示字段
 */
export default {
	name: 'superweiCombox',
	emits: ['input', 'update:modelValue', 'select'],
	props: {
		defaultValue: {
			type: String,
			default: ''
		},
		isJSON: {
			type: Boolean,
			default: false
		},
		keyName: {
			type: String,
			default: ''
		},
		showTitleType: {
			type: String,
			default: ''
		},
		showType: {
			type: String,
			default: ''
		},
		keyName1: {
			type: String,
			default: ''
		},
		selectedBackground: {
			type: String,
			default: '#f5f7fa'
		},
		selectedColor: {
			type: String,
			default: '#409eff'
		},
		border: {
			type: Boolean,
			default: true
		},
		label: {
			type: String,
			default: ''
		},
		labelWidth: {
			type: String,
			default: 'auto'
		},
		placeholder: {
			type: String,
			default: ''
		},
		candidates: {
			type: Array,
			default() {
				return []
			}
		},
		emptyTips: {
			type: String,
			default: '无匹配项'
		},
		// #ifndef VUE3
		value: {
			type: [String, Number],
			default: ''
		},
		// #endif
		// #ifdef VUE3
		modelValue: {
			type: [String, Number],
			default: ''
		},
		// #endif
	},
	data() {
		return {
			isInput: false,
			showSelector: false,
			inputVal: '',
			isClick: false
		}
	},
	computed: {
		activeFilterCandidates: function () {
			return this.filterCandidates.filter((item) => {
				return item.surplusCapacity != 0
			})
		},
		labelStyle() {
			if (this.labelWidth === 'auto') {
				return ""
			}
			return `width: ${this.labelWidth}`
		},
		filterCandidates() {
			if (this.isInput) {
				if (this.isJSON) {
					return this.candidates.filter((item) => {
						return item[this.keyName].toString().indexOf(this.inputVal) > -1
					})
				} else {
					return this.candidates.filter((item) => {
						return item.toString().indexOf(this.inputVal) > -1
					})
				}
			} else {
				return this.candidates
			}
		},
		filterCandidatesLength() {
			return this.filterCandidates.length
		}
	},
	watch: {
		// #ifndef VUE3
		value: {
			handler(newVal) {
				this.inputVal = newVal
				this.isInput = true
			},
			immediate: true
		},
		// #endif
		// #ifdef VUE3
		modelValue: {
			handler(newVal) {
				this.inputVal = newVal
				this.isInput = true
			},
			immediate: true
		},
		// #endif
		defaultValue: {
			handler(newVal) {
				this.inputVal = newVal
			},
			immediate: true,
			deep: true
		},
	},
	methods: {
		toggleSelector() {
			this.showSelector = !this.showSelector
			this.isInput = false
		},
		// 关闭当前弹框
		close() {
			this.showSelector = false
		},
		onFocus() {
			this.showSelector = true
			this.isInput = false
		},
		onBlur(e) {
			setTimeout(() => {
				this.showSelector = false
				this.isInput = false
				!this.isClick && this.filterListFn(e.detail.value)
				this.isClick = false
			}, 153)
		},
		filterListFn(value) {
			let arry = []
			let list = toRaw(this.candidates)
			if (this.isJSON) {
				arry = list.filter(x => x[this.keyName] === value)
			} else {
				arry = this.candidates.filter(x => x === value)
			}
			console.log(arry.length)
			if (!arry.length) {
				this.inputVal = ''
			}
		},
		onSelectorClick(index) {
			let item = this.filterCandidates[index]
			if (this.isJSON) {
				this.inputVal = item[this.keyName]
			} else {
				this.inputVal = item
			}
			this.showSelector = false
			this.isClick = true
			this.$emit('input', this.inputVal)
			this.$emit('update:modelValue', this.inputVal)
			this.$emit('select', item)
		},
		onInput() {
			setTimeout(() => {
				this.$emit('input', this.inputVal)
				this.$emit('update:modelValue', this.inputVal)
			})
		}
	}
}
</script>

<style lang="scss" scoped>
.mask {
	z-index: 111;
	position: fixed;
	left: 0rpx;
	top: 0rpx;
	background: rgba(255, 255, 255, 0);
	height: 100%;
	width: 100%;
}

@media only screen and (max-width: 999px) {

	/* 针对手机： */
	.superwei-combox {
		font-size: 14px;
		border: 0px solid #12b7f5;
		border-radius: 4px;
		padding: 6px 10px;
		position: relative;
		/* #ifndef APP-NVUE */
		display: flex;
		/* #endif */
		// height: 40px;
		flex-direction: row;
		align-items: center;
		// border-bottom: solid 1px #DDDDDD;
	}

}

@media only screen and (min-width: 1000px) {

	/* 针对手机： */
	.superwei-combox {
		font-size: 14px;
		border: 2px solid #12b7f5;
		border-radius: 4px;
		padding: 6px 10px;
		position: relative;
		/* #ifndef APP-NVUE */
		display: flex;
		/* #endif */
		// height: 40px;
		flex-direction: row;
		align-items: center;
		// border-bottom: solid 1px #DDDDDD;
	}

}



.superwei-combox__label {
	font-size: 16px;
	line-height: 22px;
	padding-right: 10px;
	color: #999999;
}

.superwei-combox__input-box {
	position: relative;
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex: 1;
	flex-direction: row;
	align-items: center;
}

.superwei-combox__input {
	flex: 1;
	font-size: 14px;
	height: 22px;
	line-height: 22px;
	margin-right: 12rpx;
}

.superwei-combox__input-plac {
	font-size: 14px;
	color: #ccc; //placeholder-style="color:#FFFFFF"
}

.superwei-combox__selector {
	/* #ifndef APP-NVUE */
	box-sizing: border-box;
	z-index: 2222 !important;
	/* #endif */
	position: absolute;
	// top: calc(100% + 12px);
	// left: 0;
	// width: 100%;
	top: calc(100% + 5px);
	left: -24rpx;
	right: -24rpx;
	background-color: #FFFFFF;
	border: 1px solid #EBEEF5;
	border-radius: 6px;
	box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
	// z-index: 9;
	padding: 4px 0;
}

.addWidth {
	width: 120% !important;
	left: -20% !important;
}

.superwei-combox__selector-scroll {
	/* #ifndef APP-NVUE */
	max-height: 200px;
	box-sizing: border-box;
	/* #endif */
}

.superwei-combox__selector-empty,
.superwei-combox__selector-item {
	/* #ifndef APP-NVUE */
	display: flex;
	cursor: pointer;
	/* #endif */
	line-height: 36px;
	font-size: 14px;
	text-align: center;
	// border-bottom: solid 1px #DDDDDD;
	padding: 0px 0px;
}

.tableTitle {
	display: flex;
	align-items: center;
	justify-content: center;
	height: 40px;
	font-size: 16px;

	text {
		flex: 1;
		text-align: center;
	}
}

.superwei-combox__selector-empty text,
.superwei-combox__selector-item text {
	width: 100%;
}

.superwei-combox__selector-item:hover {
	background-color: #f9f9f9;
}

.superwei-combox__selector-empty:last-child,
.superwei-combox__selector-item:last-child {
	/* #ifndef APP-NVUE */
	border-bottom: none;
	/* #endif */
}

// picker 弹出层通用的指示小三角
.uni-popper__arrow,
.uni-popper__arrow::after {
	position: absolute;
	display: block;
	width: 0;
	height: 0;
	border-color: transparent;
	border-style: solid;
	border-width: 6px;
}

.uni-popper__arrow {
	filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.03));
	top: -6px;
	left: 10%;
	margin-right: 3px;
	border-top-width: 0;
	border-bottom-color: #EBEEF5;
}

.uni-popper__arrow::after {
	content: " ";
	top: 1px;
	margin-left: -6px;
	border-top-width: 0;
	border-bottom-color: #fff;
}

.superwei-combox__no-border {
	border: none;
}
</style>
